Carbon-economy analysis on energy supply methods for rural buildings based on Trnsys energy consumption prediction

doi:10.3969/j.issn.2097-0706.2023.08.008

Abstract

Abstract:

To achieve carbon neutrality，biomass and solar power are of promising prospects in rural areas. A 3D model based on rural housings in Qian'an city，Hebei province is constructed. Energy consumption of these buildings is predicted by Trnsys，and the model is validated by measured data. Analyzing the carbon emissions and economy of different energy supply methods for the buildings，it is found that the heating mode with natural gas as fuel can reduce the carbon emissions to 2 019.75 kg/a，and the heating mode integrating biomass and standard coal can bring the cost down to 1 034.42 yuan/a. If PV power generation system is installed，the heating mode integrating biomass and air conditioning will reduce the cost to 464.62 yuan/a，and the carbon emissions to 3 060.56 kg/a， which is only second to that emitted from the gas heater. Utilizing natural gas，biomass and solar energy reasonably is an effective technique for improving the economy of heating and reducing the CO₂ emission.

Key words: carbon neutrality, energy consumption prediction, biomass energy, PV power generation, CO₂ emission

CLC Number:

TK01

HU Kaiyong, LIU Feng, WU Xiujie, HU Yunqing, ZHENG Yi, TIAN Shen. Carbon-economy analysis on energy supply methods for rural buildings based on Trnsys energy consumption prediction[J]. Integrated Intelligent Energy, 2023, 45(8): 64-71.

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项目	红砖	水泥	瓷砖	屋瓦
导热系数/[W·(m·℃）^-1]	0.49	1.84	1.10	1.74
比热容/[kJ·(kg·K）^-1]	0.86	1.00	0.84	0.97
密度/（kg·m^-3）	1 560	1 400	2 090	2 020

农宅围护结构	水泥层	红砖	瓷砖	屋瓦
外墙	0.10	0.46	0.10	—
内墙	0.10	0.26	—	—
屋顶	0.26	—	—	—
夹层	0.36	—	—	—

农作物	K	M₁	M₂
玉米	0.90	0.548~0.600	0.49
水稻	0.78	0.645~1.103	0.50
小麦	0.73	0.467~0.488	0.34
棉花	3.53	0.138~0.142	0.49
大豆	0.75	0.195~0.225	0.15
油菜	1.29	0.195~0.206	0.25